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This Tuesday, Aug. 21, 2012, photo, shows an exterior view of a home sold in Palo Alto, Calif. U.S. sales of previously occupied homes jumped in August to the highest level in more than two years, adding momentum to the housing recovery. The National Association of Realtors says sales rose 7.8 percent to a seasonally adjusted annual rate of 4.82 million. That's the most since May 2010, when sales were fueled by a federal home-buying tax credit. (AP Photo/Paul Sakuma)

This Tuesday, Aug. 21, 2012, photo, shows an exterior view of a home sold in Palo Alto, Calif. U.S. sales of previously occupied homes jumped in August to the highest level in more than two years, adding momentum to the housing recovery. The National Association of Realtors says sales rose 7.8 percent to a seasonally adjusted annual rate of 4.82 million. That's the most since May 2010, when sales were fueled by a federal home-buying tax credit. (AP Photo/Paul Sakuma)